包钢球团配加EP灰及酸洗氧化铁皮试验研究

Experimental study on Baotou steel's pellet with EP ash and pickling iron oxide scale

魏国良 ¹刘曙光 ¹付国伟 ²韩峰 ¹吕志义²

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作者信息

1. 内蒙古包钢钢联股份有限公司稀土钢炼铁厂内蒙古包头 014010
2. 内蒙古包钢钢联股份有限公司技术中心内蒙古包头 014010
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摘要

针对白云鄂博铁精矿的特殊性及包钢 624 m2 带式焙烧工艺铁料结构,进行了配加 2%EP灰及 2%酸洗氧化铁皮的制备氧化球团矿试验研究,结果表明:配加 2%EP灰后,可实现膨润土配比降低 0.5%,为了保证球团矿抗压强度≥2 500 N,焙烧温度需提高 20～30℃;配加 2%氧化铁皮后,生球性能小幅改善,为了保证球团矿抗压强度≥2 500 N,焙烧温度需提高 50～60℃;配加少量酸洗氧化铁皮或EP灰,其化学成分及还原性能可以满足高炉生产需求.

Abstract

Aiming at the particularity of the Bayan Obo iron concentrate and the iron material structure of Baotou Steel's 624m2 belt roasting process,a stone oxide pellet with 2%EP ash and 2%pickling iron oxide scale was developed.The result show that:After adding 2%EP ash,the ratio of bentonite can be reduced by 0.5%.In order to ensure the compressive strength of pellets≥2 500 N,the roasting temperature needs to be increased by 20℃to 30℃;after adding 2%iron oxide scale,the green pellet performance is slightly reduced.Improvement,in order to ensure the compressive strength of pellets≥2 500 N,the roasting temperature needs to be increased by 50～60℃;with a small amount of pickled iron oxide scale or EP ash,its chemical composition and reducing performance can meet the blast furnace production requirements.

关键词

白云鄂博铁精矿/球团/EP灰/酸洗氧化铁皮

Key words

baiyun obo iron concentrate/pellet/steel making dust/pickling iron oxide scale

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出版年

2024

冶金标准化与质量

冶金工业信息标准研究院

冶金标准化与质量

ISSN：1003-0514

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